Vow of silence

A woman joins a convent, and as part of her induction, she takes a vow of silence, other than prayer. Mother Superior makes this quite clear, and says other than at times such as this, where she is required to speak to new Sisters, there are very few exceptions, and normally only once per year are the Sisters allowed to speak, and then minimally. The new sister agrees to everything, and begins her new, silent life. After a year, Mother Superior lets the new sister know she will get 2 words during her anniversary day. Sister considers carefully, and after a few minutes contemplation, says to Mother Superior, "Cold Food." Mother Superior nods, and dismisses Sister. The next year, after a few moments, the 2 words Sister chooses are, "Hard Bed." Again, Mother Superior nods, and dismisses Sister. The 3rd year, Sister is ready as soon as Mother Superior says it's time, and blurts out, "I Quit!" Mother Superior says, "Well, I'm not surprised, you've done nothing but bitch since you got here!"